Telescopic ashes-elevator.



P. GROTBNRATH.

TELBSUOPIO ASHBS ELBVATOB.

APPLIUATION FILED SBF120, 1909.

Patented Apr. 11, 1911.

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F. GROTENRATH. TELEsooPIo arms ELEvAToR.

APPLICATION FILED SEPT. 20, 1909.

Patented Apr. 11, 1911.

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FRED GROTENRATH, OF MILWAUKEE, WISCONSIN.

TELESCOPIC ASHES-ELEVATOR.

Specification of Letters Patent.

Application filed September 20, 1909.

Patented Apr. 11, 1911.

Serial No. 518,608.

To all whom 'it may concern:

Be it known that I, FRED GROTENRATH,

of Milwaukee, Wisconsin, have invented a Telescopic Ashes-Elevator, ofwhich the folto say, the upper end can be raised and lowered so as' tobe withdrawn completely into the vault when not in use, the opening inthe sidewalk being closed by a trapdoor or cover-plate. The structure ofsuch elevators as heretofore constructed has been such that the slidingmembers which support the top are necessarily so long that in loweringthem they strike the bottom of the ash-pit, and in vaults which providelimited headroom between the floor and sidewalk, it is not possible forsuch construction in many cases to give them a suiiicient elongation toelevate the ashes to the necessary height in order to dump them directlyinto wagons. Hence in such elevators, where the headroom is limited inorder to give them proper extension, it becomes necessary to make a deepash-pit below the floor to receive the lower ends, and this becomesclogged with ashes so as to interfere with the lowering of the top.

The object of this invention is to obviate this disadvantage, and toprovide with a head-room however limited beneath the sidewalk anelevator extensible to any height, without lowering the floor-level; andin particular to so arrange it that the lowering of the elevator cannotpossibly be interfered with by the presence of the ashes in the pit.

My invention comprises in general a pair of vertical sliding-posts whichsupport the elevator-top, guides for the intermediate portions of saidposts, and tubular sockets 50-which are set in vertical holes dug belowthe floor to whatever depth is necessary in order to accommodate saidsliding-posts when the elevator is collapsed. A special feature of thisconstruction is the raising of the upper ends of said tubular sockets toa point above the limit of the ash-pile, whereby the ashes are preventedfrom entering the tops of said sockets; and I furthermore provideagainst ashes entering said sockets by a top-closure for each sockethaving a central opening therein neatly fitting the post which slides upand down in said socket.

My invention consists further in the constructions and combinationswhich are hereinafter described and particularly set forth in the claimsaccompanying this specification.

The nature of my invention will best be understood from a considerationof the accompanying drawings, which illustrate the most improved formthereof, and herein- Figure 1 is a front elevation of the elevatorcollapsed, with the sidewalk, trap-doors, floor, ash-pit and tubularsockets shown in longitudinal section; Fig. 2 is a similar view of theelevator extended, the lowerfportion of the sockets being omitted; Fig.3 is a longitudinal section through the elevator at one side of thebelt, in the position of Fig. 2; Fig. 4 is a side elevation on a largerscale of the lower end of one of the posts and the upper end of thecorresponding socket (shown in section) and parts accessory thereto; andFig. 5 is a transverse section through the same, taken on the plane 5.

In these drawings the same part is designated by the samereference-letter or numeral in each figure.

The basement-floor is represented at a, the ash-pit at b, the sidewalkat c, the a erture therein at l through which the as les are elevated,and the trap-doors covering such aperture at e; the parts above namedbeing shown merely for the purpose of illustration, and being, ofcourse, subject to differences in form, position and dimensions indifferent buildings.

Between the ash-pit and sidewalk is erected a supporting-frame of fourposts #the lower ends of which may rest upon the floor or ash-pit, andthe upper ends may be secured in fixed position by a pair of anglebars gwhich span the opening d. Between these frame-posts is mounted theslidingframe which supports the elevator-top, the same comprising twovertical sliding posts h, connected near their upper ends in rigidrelation by cross-bars z', y', and the lower ends of which are receivedin a pair of vertical tubular sockets c, which are set, as clearly shownin the drawings, in holes or wells bored below the floor of the ash-pitfor this purpose. 7c may be conveniently made of ordinary iron piping,and it will be noted that the sockets are considerably larger ininternal diameter than the diameter of the posts, so as to give room forracks Z, one on each post, which serve as means for raising the frameand ai'e engaged by a pair of pinions fm, mounted on a shaft n turningin bearings n, which are carried bythe fraine-posts f; and the shaft aprojects at one end beyond the bearings and carries on said projectingend a wormgear 0 (incased), engaged by the worm 0 which is turned bymeans of a crank 02, or by power if desired. It will be observed thatthe upper ends of the sockets are made to rise a considerable distanceabove the ashpit, and they vare closed with caps c, through holes in the`center of which pass the posts Z; this prevents ashes from enteringthesockets and from any interfering with the raising and lowering of thetop-frame. Also, the posts ZL are provided upon their :lower ends withclosed pistons h carrying 'rubber-gaskets 71,2, which hold the ends ofthe posts centrally within the sockets :and prevent .any-dust orfragments which might get through the holes in the caps 7c into thesockets 7c from falling below the pistons; so that on raising the postssuch accumulation can easily be cleaned out.

Upon the upper ends rof the posts ZL are mounted a pair of bearing-boxesjo which carry the upper shaft g ofthe elevatoron Vwhich is `mounted asprocket-wheel Q', and

directly below is the elevator boot r in which turns the correspondingsprocket-wheel s upon the driving-shaft s, which turns in bearings s2carried by the sockets 7s, yand said shaft may be driven by means of asprocketwheel s3 mounted on one end and a countershaft t `carrying adriving-pulley t and a sprocket-wheel t2, andthe sprocket-wheels s3 andZ2 being connected by the driving chain 153. The lower portion of saidchain is protected by a vlook a rising above the ashpit a suflicientdistance to prevent ashes from getting in at'the top'thereof.

rPhe upper ends of the 'posts ZL are `guided by means of two pairs offlanged rollers u mountedupon vstub-shafts a carried by the frame-postslj, vas shown, said Vrollers being of proper form to allow the racks Zto pass between them. The lelevator-belt or chain o, mounted upon thetwo sprocket-wheels g ands?, carries the usual elevating-buckets v, theform of lsaid chain constituting no part of this. present invention..Over the upper end ofthe vchain Land wheel g Vmay be mounted theusualhood w, upon which is v mounted a folding-chute x, ybut these ele-Y ments also are customary accessories and Both the posts 7L and thesockets y v Having thus described my invention, what Y I claim as newand desire to secure by Letters Patent is:

l. ln an ashes-elevator, the combination with the top-frame of a pair ofvertically moving posts supporting it and tubular sockets receiving saidpost-s, said sockets Vbeing set in and projecting belowftlie floor ofthe ash-pit.

2. In an ashes-elevator, in combination with a top-frame -h-avinga'vertically sliding post -supporting it, a vertical socket set in thefloor `of the ash-pit andtelescopically receiving said post, the upperend ofsaid socket rising above the floor of the ash-pit to a heightsu-ficient to clear the ashes piled therein.

3. A telescopic ashes-elevator comprising in combination with supportingmeans, a top-frame carrying a shaft and wheel over which passes theelevator lchaimanash boot immediately below said wheel, a second shaftcarrying a wheel within said ash-boot, an elevator belt mounted on thetwo wheels and carrying means for elevating materials,

means for driving one of said shafts, and a` vertical socket set vin'and below thel floor of the ash-pit; said top-frame having'a ver- Ytical post the lower end of vwhich is received in said socketand guidedthereby; and means for raising .and lowering said post.

4. A telescopic ashes-elevator comprising, in combination, a supportingframe, a rising and falling top-frame having a pair o-f vertical posts,means on .said ,supporting frame for -slidably guiding said posts, abeltwheel rotatably mounted on the upper yend of said top-frame, anash-boot, asec'ond beltwheel rotatably mounted therein, an elevator-beltpassing around said wheels and carrying means for elevating materials,means for driving one of said wheels, a pair of vertical socketsreceiving the-ends of said posts and vextending above the 'limit'ofthe yash-pile, and meansfor Vraising and 'lowering said posts.

v5. A telescopic ashes-elevator comprising,

in combination, asupporting frame, :a rising and fallingtop-frame havinga pair of and means for raising and lowering said posts.

6. A telescopic ashes-elevator comprising, in combination, a supportingframe, a rising and falling top-frame having a pair of vertical posts,means on said supporting frame for slidably guiding said posts, abelt-wheel rotatably mounted on the upper end of said top-frame, anash-boot, a second belt-wheel rotatably mounted therein, anelevator-belt passing around said wheels and carrying means forelevating materials, means for driving one of said wheels, a pair ofvertical sockets receiving the ends of said posts and extending abovethe limit of the ash-pile, a pair of racks on the respective posts, atransverse shaft mounted on said su porting frame, means for rotatingsaid sha t, and a pair of gear-wheels mounted on said shaft and engagingthe respective racks.

7 In a telescopic ashes-elevator, the combination with a top-frametherefor having a vertical post, of a vertical tubular socket set in thefloor of the ash-pit for receiving said post, said post being of smallerdiameter than the internal diameter of said socket and having a pistonon the lower end thereof fitting the bore of said socket, and aremovable perforated cap through which said post passes covering theupper end of said socket.

8. A telescopic ashes-elevator comprising, in combination, astationary-frame, a topframe for said elevator comprising a pair ofvertical posts each of which carries a rack, guiding rollers mounted onsaid stationary-frame intermediately of said posts and acting as guidestherefor, a belt-wheel rotatably mounted on the up er end of saidtop-frame, a second belt-w eel rotatably mounted at a point below saidtop-frame, an elevator-belt passing over said wheels, means for drivingsaid elevator-belt, a pair of vertical tubular sockets receiving thelower ends of said posts and the upper ends of which extend above theupper limit of the ashpile and the lower ends below the base of theash-pile, pistons mounted on the lower ends of the respective posts andfitting the bores of the respective sockets, a pair of perforated capsremovably mounted on the upper ends of said sockets and through whichsaid posts pass, a transverse shaft rotatably mounted on saidstationary-frame and carrying gear-wheels engaging said racks, and meansfor rotating said last-named shaft.

9. A telescopic ashes-elevator comprising in combination a stationaryframe, a top frame having vertical posts with racks, a belt wheelrotatably mounted on the upper end of said top frame, a second beltwheel rotatably mounted on a lower plane, an elevator belt passing oversaid wheels and having elevating means, means for driving said belt,pistons on the lower ends of said posts, sockets in which said pistonswork, and means engaging said racks, and means for rotating such means.

10. A telescopic ashes-elevator comprising in combination a stationaryframe, a top frame having vertical posts with racks, a belt wheelrotatably mounted on the upper end of said top frame, a second beltwheel rotatably mounted on a lower plane, an elevator belt passing oversaid wheels and having elevating means, means for driving said belt,pistons on the lower ends of said posts, sockets in which said pistonswork, means engaging said racks, means for rotating such means, andguide rollers for the upper ends of said posts.

1l. Atelescopic ashes-elevator comprising in combination a stationaryframe, a top frame havingvertical posts with racks, a belt wheelrotatably mounted on the upper end of said top frame, a second beltwheel rotatabl mounted on a lower plane, an elevator be t passing oversaid wheels and having elevating means, means for driving said belt,pistons on the lower ends of said posts,

sockets in which said pistons work, means engaging said racks, means forrotating such means, and guide rollers for the upper ends of said posts,said guide rollers bein constructed to allow of the passage o saidracks.

In witness whereof, I have hereunto set my hand this 15th day ofSeptember, 1909.

FRED GROTENRATH. In the presence of- FRED GROTENRATH, J r., EDWARDGROTENRATH.

Copies of this patent may be obtained for i'lve cents each, byaddressing the Commissioner of Patents, Washington, D. C.

